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Published on 2008-09-08T01:58:15Z
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Why prefer composition over inheritance? What trade-offs are there for each approach? When should you choose inheritance over composition?
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Hi, I wonder if anyone can help out here, I'm trying to understand how use an objects properties across multiple non class pages,but I can't seem to be able to get my head around everything i have tried so far.
For example a class called person;
class person {
static $name;
}
but i have…
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Hi!
I want to ask you to provide me with some articles (maybe books), which you possibly have found very convincing criticising the OOP methodology.
I have read some in the WWW on this topic and I didn't really find a 'definitive demotivator'.
It's not much about my personal attitude to the OOP…
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Im used to java and creating UML.. and i was wondering how can PHP be OOP, the objects live only until you make a request.. then they destroy, so if im using a database is useless to create a class and add the members (variables) to the class, they will be useless.. i cant pass the main system object…
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I know this is a silly question but i don't understand Access Modifiers in OOP.
Why do we make for example in JAVA instance variables private and then use public getter and setter methods to access them? I mean whats the reasoning/logic behind this?
You still get to the instance variable but why use…
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Frameworks being all OOP, would it not be wise to go into frameworks without having a solid background in OOP? I can write basic classes but nothing too fancy or abstract.
How much should I know of OOP before moving to frameworks?
Right now I am PHP Object-Oriented Programming to learn OOP.
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Hi,
I study about today about 2 database design inheritance approaches:
1. Single Table Inheritance
2. Class Table Inheritance
In my student opinion Single Table Inheritance make database more smaller vs other approaches because she use only 1 table.
But i read that the more favorite approach…
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I know that private inheritance is supported in C++ and only public inheritance is supported in C#. I also came across an article which says that private inheritance usually defines a HAS-A relationship and kind of an aggregation relationship between the classes.
EDIT: C++ code for private inheritance:
The…
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I have am working on a web application that makes use of helper classes. These classes hold functions to various operation such as form handling.
Sometimes I need these classes at more than one spot in my application, The way I do it now is to make a new Object. I can't pass the variable, this will…
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Are Composition and Inheritance are the same?
If I want to implement the composition pattern, how can I do that in Java?
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Why does the following produce a compiler error:
public interface OwnSession : ISession { }
[...]
OwnSession s = SessionFactory.OpenSession(); // compiler error (in german unfortunately)
[...]
"SessionFactory" returns a "ISession" on "OpenSession()" (NHibernate)
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